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Commit b9ca9119 authored by Steven Moreland's avatar Steven Moreland Committed by Gerrit Code Review
Browse files

Merge "installd: error on too high user" into main

parents fae4569b 3694536c

cmds/installd/InstalldNativeService.cpp

+43 −0
Original line number Diff line number Diff line
@@ -236,6 +236,16 @@ binder::Status checkArgumentFileName(const std::string& path) { 
    }                                                       \

}



// we could have tighter checks, but this is only to avoid hard errors. Negative values are defined

// in UserHandle.java and carry specific meanings that may not be handled by certain APIs here.

#define ENFORCE_VALID_USER(userId)                                     \

    {                                                                  \

        if (static_cast<uid_t>(std::abs(userId)) >=                    \

            std::numeric_limits<uid_t>::max() / AID_USER_OFFSET) {     \

            return error("userId invalid: " + std::to_string(userId)); \

        }                                                              \

    }



#define CHECK_ARGUMENT_UUID(uuid) {                         \

    binder::Status status = checkArgumentUuid((uuid));      \

    if (!status.isOk()) {                                   \
@@ -696,6 +706,7 @@ binder::Status InstalldNativeService::createAppDataLocked( 
        int32_t flags, int32_t appId, int32_t previousAppId, const std::string& seInfo,

        int32_t targetSdkVersion, int64_t* _aidl_return) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);
@@ -790,6 +801,8 @@ binder::Status InstalldNativeService::createAppDataLocked( 
binder::Status InstalldNativeService::createSdkSandboxDataPackageDirectory(

        const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId,

        int32_t appId, int32_t flags) {

    ENFORCE_VALID_USER(userId);



    int32_t sdkSandboxUid = multiuser_get_sdk_sandbox_uid(userId, appId);

    if (sdkSandboxUid == -1) {

        // There no valid sdk sandbox process for this app. Skip creation of data directory
@@ -828,6 +841,7 @@ binder::Status InstalldNativeService::createAppData( 
        int32_t flags, int32_t appId, int32_t previousAppId, const std::string& seInfo,

        int32_t targetSdkVersion, int64_t* _aidl_return) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);

    LOCK_PACKAGE_USER();
@@ -839,6 +853,7 @@ binder::Status InstalldNativeService::createAppData( 
        const android::os::CreateAppDataArgs& args,

        android::os::CreateAppDataResult* _aidl_return) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(args.userId);

    // Locking is performed depeer in the callstack.



    int64_t ceDataInode = -1;
@@ -854,6 +869,10 @@ binder::Status InstalldNativeService::createAppDataBatched( 
        const std::vector<android::os::CreateAppDataArgs>& args,

        std::vector<android::os::CreateAppDataResult>* _aidl_return) {

    ENFORCE_UID(AID_SYSTEM);

    for (const auto& arg : args) {

        ENFORCE_VALID_USER(arg.userId);

    }



    // Locking is performed depeer in the callstack.



    std::vector<android::os::CreateAppDataResult> results;
@@ -868,6 +887,7 @@ binder::Status InstalldNativeService::createAppDataBatched( 


binder::Status InstalldNativeService::reconcileSdkData(

        const android::os::ReconcileSdkDataArgs& args) {

    ENFORCE_VALID_USER(args.userId);

    // Locking is performed depeer in the callstack.



    return reconcileSdkData(args.uuid, args.packageName, args.subDirNames, args.userId, args.appId,
@@ -891,6 +911,7 @@ binder::Status InstalldNativeService::reconcileSdkData(const std::optional<std:: 
                                                       int userId, int appId, int previousAppId,

                                                       const std::string& seInfo, int flags) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);

    LOCK_PACKAGE_USER();
@@ -974,6 +995,7 @@ binder::Status InstalldNativeService::reconcileSdkData(const std::optional<std:: 
binder::Status InstalldNativeService::migrateAppData(const std::optional<std::string>& uuid,

        const std::string& packageName, int32_t userId, int32_t flags) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);

    LOCK_PACKAGE_USER();
@@ -1041,6 +1063,7 @@ binder::Status InstalldNativeService::clearAppProfiles(const std::string& packag 
binder::Status InstalldNativeService::clearAppData(const std::optional<std::string>& uuid,

        const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);

    LOCK_PACKAGE_USER();
@@ -1132,6 +1155,7 @@ binder::Status InstalldNativeService::clearAppData(const std::optional<std::stri 
binder::Status InstalldNativeService::clearSdkSandboxDataPackageDirectory(

        const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId,

        int32_t flags) {

    ENFORCE_VALID_USER(userId);

    const char* uuid_ = uuid ? uuid->c_str() : nullptr;

    const char* pkgname = packageName.c_str();
@@ -1218,6 +1242,7 @@ binder::Status InstalldNativeService::deleteReferenceProfile(const std::string& 
binder::Status InstalldNativeService::destroyAppData(const std::optional<std::string>& uuid,

        const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);

    LOCK_PACKAGE_USER();
@@ -1288,6 +1313,8 @@ binder::Status InstalldNativeService::destroyAppData(const std::optional<std::st 
binder::Status InstalldNativeService::destroySdkSandboxDataPackageDirectory(

        const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId,

        int32_t flags) {

    ENFORCE_VALID_USER(userId);



    const char* uuid_ = uuid ? uuid->c_str() : nullptr;

    const char* pkgname = packageName.c_str();
@@ -1435,6 +1462,7 @@ binder::Status InstalldNativeService::snapshotAppData(const std::optional<std::s 
                                                      int32_t userId, int32_t snapshotId,

                                                      int32_t storageFlags, int64_t* _aidl_return) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);

    LOCK_PACKAGE_USER();
@@ -1569,6 +1597,7 @@ binder::Status InstalldNativeService::restoreAppDataSnapshot( 
        const int32_t appId, const std::string& seInfo, const int32_t userId,

        const int32_t snapshotId, int32_t storageFlags) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);

    LOCK_PACKAGE_USER();
@@ -1641,6 +1670,7 @@ binder::Status InstalldNativeService::destroyAppDataSnapshot( 
        const int32_t userId, const int64_t ceSnapshotInode, const int32_t snapshotId,

        int32_t storageFlags) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);

    LOCK_PACKAGE_USER();
@@ -1674,6 +1704,7 @@ binder::Status InstalldNativeService::destroyCeSnapshotsNotSpecified( 
        const std::optional<std::string>& volumeUuid, const int32_t userId,

        const std::vector<int32_t>& retainSnapshotIds) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID_IS_TEST_OR_NULL(volumeUuid);

    LOCK_USER();
@@ -1864,6 +1895,7 @@ fail: 
binder::Status InstalldNativeService::createUserData(const std::optional<std::string>& uuid,

        int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    LOCK_USER();
@@ -1884,6 +1916,7 @@ binder::Status InstalldNativeService::createUserData(const std::optional<std::st 
binder::Status InstalldNativeService::destroyUserData(const std::optional<std::string>& uuid,

        int32_t userId, int32_t flags) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    LOCK_USER();
@@ -2671,6 +2704,7 @@ binder::Status InstalldNativeService::getUserSize(const std::optional<std::strin 
        int32_t userId, int32_t flags, const std::vector<int32_t>& appIds,

        std::vector<int64_t>* _aidl_return) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    // NOTE: Locking is relaxed on this method, since it's limited to

    // read-only measurements without mutation.
@@ -2806,6 +2840,7 @@ binder::Status InstalldNativeService::getExternalSize(const std::optional<std::s 
        int32_t userId, int32_t flags, const std::vector<int32_t>& appIds,

        std::vector<int64_t>* _aidl_return) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    // NOTE: Locking is relaxed on this method, since it's limited to

    // read-only measurements without mutation.
@@ -2926,6 +2961,7 @@ binder::Status InstalldNativeService::getAppCrates( 
        const std::vector<std::string>& packageNames, int32_t userId,

        std::optional<std::vector<std::optional<CrateMetadata>>>* _aidl_return) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    for (const auto& packageName : packageNames) {

        CHECK_ARGUMENT_PACKAGE_NAME(packageName);
@@ -2975,6 +3011,7 @@ binder::Status InstalldNativeService::getUserCrates( 
        const std::optional<std::string>& uuid, int32_t userId,

        std::optional<std::vector<std::optional<CrateMetadata>>>* _aidl_return) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

#ifdef ENABLE_STORAGE_CRATES

    LOCK_USER();
@@ -3018,6 +3055,7 @@ binder::Status InstalldNativeService::getUserCrates( 
binder::Status InstalldNativeService::setAppQuota(const std::optional<std::string>& uuid,

        int32_t userId, int32_t appId, int64_t cacheQuota) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    std::lock_guard<std::recursive_mutex> lock(mQuotasLock);
@@ -3261,6 +3299,7 @@ binder::Status InstalldNativeService::restoreconAppData(const std::optional<std: 
        const std::string& packageName, int32_t userId, int32_t flags, int32_t appId,

        const std::string& seInfo) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);

    LOCK_PACKAGE_USER();
@@ -3271,6 +3310,7 @@ binder::Status InstalldNativeService::restoreconAppDataLocked( 
        const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId,

        int32_t flags, int32_t appId, const std::string& seInfo) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);
@@ -3302,6 +3342,7 @@ binder::Status InstalldNativeService::restoreconSdkDataLocked( 
        const std::optional<std::string>& uuid, const std::string& packageName, int32_t userId,

        int32_t flags, int32_t appId, const std::string& seInfo) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_UUID(uuid);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);
@@ -3753,6 +3794,7 @@ binder::Status InstalldNativeService::prepareAppProfile(const std::string& packa 
        int32_t userId, int32_t appId, const std::string& profileName, const std::string& codePath,

        const std::optional<std::string>& dexMetadata, bool* _aidl_return) {

    ENFORCE_UID(AID_SYSTEM);

    ENFORCE_VALID_USER(userId);

    CHECK_ARGUMENT_PACKAGE_NAME(packageName);

    CHECK_ARGUMENT_PATH(codePath);

    LOCK_PACKAGE_USER();
@@ -3775,6 +3817,7 @@ binder::Status InstalldNativeService::migrateLegacyObbData() { 


binder::Status InstalldNativeService::cleanupInvalidPackageDirs(

        const std::optional<std::string>& uuid, int32_t userId, int32_t flags) {

    ENFORCE_VALID_USER(userId);

    const char* uuid_cstr = uuid ? uuid->c_str() : nullptr;



    if (flags & FLAG_STORAGE_CE) {